Re: [PATCH v4 09/10] acpi/numa/hmat: Register HMAT at device_initcall level

["Rafael J. Wysocki" <rafael@kernel.org>]

On Mon, Jun 24, 2019 at 8:34 PM Dan Williams <dan.j.williams@intel.com> wrote:
>
> In preparation for registering device-dax instances for accessing EFI
> specific-purpose memory, arrange for the HMAT registration to occur
> later in the init process. Critically HMAT initialization needs to occur
> after e820__reserve_resources_late() which is the point at which the
> iomem resource tree is populated with "Application Reserved"
> (IORES_DESC_APPLICATION_RESERVED). e820__reserve_resources_late()
> happens at subsys_initcall time.
>
> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
> Cc: Len Brown <lenb@kernel.org>
> Cc: Keith Busch <keith.busch@intel.com>
> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

> ---
>  drivers/acpi/numa/hmat.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c
> index 2c220cb7b620..1d329c4af3bf 100644
> --- a/drivers/acpi/numa/hmat.c
> +++ b/drivers/acpi/numa/hmat.c
> @@ -671,4 +671,4 @@ static __init int hmat_init(void)
>         acpi_put_table(tbl);
>         return 0;
>  }
> -subsys_initcall(hmat_init);
> +device_initcall(hmat_init);
>